WGU C393 COMPTIA A+ CORE 1 EXAM
220-1001 EXAM QUESTIONS AND
ANSWERS | 2026 UPDATE | 100%
CORRECT.
Ports 20 and 21 - ANS File Transfer Protocol (FTP)
Port 22 - ANS SSH (Secure Shell)
Port 23 - ANS Telnet
Port 25 - ANS Simple Mail Transfer Protocol (SMTP)
Port 53 - ANS DNS (Domain Name System)
Ports 67 & 68 - ANS Dynamic Host Configuration Protocol (DHCP)
Port 80 - ANS HTTP (Hypertext Transfer Protocol)
Port 110 - ANS POP3 (Post Office Protocol)
Port 143 - ANS IMAP (Internet Message Access Protocol)
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, Ports 137-139 - ANS NetBIOS/NetBT
Ports 161 & 162 - ANS Simple Network Management Protocol (SNMP)
Port 389 - ANS Lightweight Directory Access Protocol (LDAP)
Port 443 - ANS HTTPS (Hypertext Transfer Protocol Secure)
Port 445 - ANS SMB (Server Message Block) or CIFS (Common Internet File System).
Server Message Block (SMB), one version of which was also known as Common Internet File
System (CIFS), is a communication protocol for providing shared access to files, printers, and
serial ports between nodes on a network. It also provides an authenticated inter-process
communication mechanism. Most usage of SMB involves computers running Microsoft
Windows, where it was known as "Microsoft Windows Network" before the introduction of
Active Directory. Corresponding Windows services are LAN Manager Server for the server
component, and LAN Manager Workstation for the client component.[4]
Port 427 - ANS SLP (Service Location Protocol)
SLP is used by devices to announce services on a local network. Each service must have a URL
that is used to locate the service. Additionally it may have an unlimited number of name/value
pairs, called attributes. Each device must always be in one or more scopes. Scopes are simple
strings and are used to group services, comparable to the network neighborhood in other
systems. A device cannot see services that are in different scopes.
Port 548 - ANS AFP (Apple Filing Protocol)
The Apple Filing Protocol (AFP), formerly AppleTalk Filing Protocol, is a proprietary network
protocol, and part of the Apple File Service (AFS), that offers file services for macOS and the
classic Mac OS. In macOS, AFP is one of several file services supported, with others including
Server Message Block (SMB), Network File System (NFS), File Transfer Protocol (FTP), and
@COPYRIGHT ALL RIGHTS RESERVED PAGE 2 OF 11
220-1001 EXAM QUESTIONS AND
ANSWERS | 2026 UPDATE | 100%
CORRECT.
Ports 20 and 21 - ANS File Transfer Protocol (FTP)
Port 22 - ANS SSH (Secure Shell)
Port 23 - ANS Telnet
Port 25 - ANS Simple Mail Transfer Protocol (SMTP)
Port 53 - ANS DNS (Domain Name System)
Ports 67 & 68 - ANS Dynamic Host Configuration Protocol (DHCP)
Port 80 - ANS HTTP (Hypertext Transfer Protocol)
Port 110 - ANS POP3 (Post Office Protocol)
Port 143 - ANS IMAP (Internet Message Access Protocol)
@COPYRIGHT ALL RIGHTS RESERVED PAGE 1 OF 11
, Ports 137-139 - ANS NetBIOS/NetBT
Ports 161 & 162 - ANS Simple Network Management Protocol (SNMP)
Port 389 - ANS Lightweight Directory Access Protocol (LDAP)
Port 443 - ANS HTTPS (Hypertext Transfer Protocol Secure)
Port 445 - ANS SMB (Server Message Block) or CIFS (Common Internet File System).
Server Message Block (SMB), one version of which was also known as Common Internet File
System (CIFS), is a communication protocol for providing shared access to files, printers, and
serial ports between nodes on a network. It also provides an authenticated inter-process
communication mechanism. Most usage of SMB involves computers running Microsoft
Windows, where it was known as "Microsoft Windows Network" before the introduction of
Active Directory. Corresponding Windows services are LAN Manager Server for the server
component, and LAN Manager Workstation for the client component.[4]
Port 427 - ANS SLP (Service Location Protocol)
SLP is used by devices to announce services on a local network. Each service must have a URL
that is used to locate the service. Additionally it may have an unlimited number of name/value
pairs, called attributes. Each device must always be in one or more scopes. Scopes are simple
strings and are used to group services, comparable to the network neighborhood in other
systems. A device cannot see services that are in different scopes.
Port 548 - ANS AFP (Apple Filing Protocol)
The Apple Filing Protocol (AFP), formerly AppleTalk Filing Protocol, is a proprietary network
protocol, and part of the Apple File Service (AFS), that offers file services for macOS and the
classic Mac OS. In macOS, AFP is one of several file services supported, with others including
Server Message Block (SMB), Network File System (NFS), File Transfer Protocol (FTP), and
@COPYRIGHT ALL RIGHTS RESERVED PAGE 2 OF 11
